Author Topic: Schwalbe Dureme Crackle  (Read 220 times)

julio

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Schwalbe Dureme Crackle
« on: October 09, 2021, 04:13:59 PM »
My tires show signs of wear.. They are from 2013-14, ride around 10.000 kms.




Do you think I have to replace them soon?
« Last Edit: October 09, 2021, 04:17:28 PM by julio »

martinf

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Re: Schwalbe Dureme Crackle
« Reply #1 on: October 09, 2021, 06:45:01 PM »
I reckon it depends on where you intend riding.

I still have the tyres I toured on in 2011, but have put them on my utility bike to finish them off. Mine are Supremes, so probably a bit more delicate than your Duremes. One of them has done over 12000 kms so far.

If I intended doing a long tour I would either (probably) fit new tyres before going, or (perhaps) take a spare in case a well-used tyre finally failed.

julio

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Re: Schwalbe Dureme Crackle
« Reply #2 on: October 09, 2021, 09:44:48 PM »
I'm on a road trip currently and even if I ride most of the time on the asphalt, i use as well gravel road.
I think to ride with a Crackle tires, you have most of chance to have flat tires..

And about Supreme Schwalbe, do you think it's a good choice on bike tour ?

martinf

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Re: Schwalbe Dureme Crackle
« Reply #3 on: October 10, 2021, 09:33:00 PM »
And about Supreme Schwalbe, do you think it's a good choice on bike tour ?

The 50 mm width of Schwalbe Supreme has done me about 20000 kms of riding so far on 26" and 650B wheel sizes, with very few punctures and (so far) no tyres destroyed on rocks or other "features" while riding off-road. And none worn out completely, although the treads on the oldest are slightly cracked, but not as much as your Duremes. Cracking may be less of an issue with almost slick tyres.

But I may have been very lucky, Supremes are lighter and more fragile than Duremes, especially at the sidewalls. There have been reports of sidewall damage destroying Supremes.

Normally I ride on tarmac roads. But I quite often use gravel or sand paths, and have used some fairly rocky tracks, even with a full touring load. And I have done probably about 2000 kms of survey work while riding on Supremes, most of this was on mild off-road surfaces. 

If doing a lot of off-road riding I reckon Duremes are better. The sidewalls are more substantial and should resist rocks better, plus the tread ought to work a bit better in some situations (Supremes are more or less slick).

Getting Duremes here in France would be a problem since Brexit, as they are only available from SJS.

Whereas Supremes, although they seem to be discontinued, are (at the moment) still available from German online retailers such as Bike24.

Marathon Mondials are still in the Schwalbe catalogue in 26", these are heavier than both Supremes and Duremes and will probably roll less easily on tarmac than either, while probably being better for off-road riding.

There might be something equivalent from other manufacturers such as Continental.

julio

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Re: Schwalbe Dureme Crackle
« Reply #4 on: October 11, 2021, 06:09:18 AM »
Thanks Martin for this detailed answer

steve216c

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Re: Schwalbe Dureme Crackle
« Reply #5 on: October 11, 2021, 06:56:34 AM »
I presume you mean cracked tyres not crackle?

UV (sunlight) can cause rubber to deteriorate. I have seen older tyres with otherwise good tread fail. I think this is more a worry than how many km you have ridden. UB damage happens over time, and depends on how tyres are stored. Leave a bike exposed to the elements and it can be rapid. But store your bike (or tyres) out of the sun and it will be a slower process.

Tyre tread itself is not as important on a bike than a car for grip if road riding. But if you can see threads exposed or even see the smart guard through cracks when pumped up to max, you ought to change ASAP. Id be worried about tyre blowout.

Im sure I have had 20,000 out of Schwalbe Marathon tyres before that were not uv damaged.

But for peace of mind, if your tyres are 10 years old, replace for new and ride another 10 on replacement tyres.
If only my bike shed were bigger on the inside...

martinf

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Re: Schwalbe Dureme Crackle
« Reply #6 on: October 11, 2021, 08:57:30 AM »
Tyre tread itself is not as important on a bike than a car for grip if road riding. But if you can see threads exposed or even see the smart guard through cracks when pumped up to max, you ought to change ASAP. Id be worried about tyre blowout.

I've had tyres fail by blowing out at the tread once or twice, in the 1970's. And had one dangerous blowout with a nearly new but cheap tyre that melted around the wire bead after excessive braking.  Never (yet) had those problems with good quality modern tyres.

With modern tyres I have had several failures at the sidewall, generally with 16" tyres on my Bromptons after abusing them on survey work. So far these failures have been gradual, with a bulge forming that gives some warning before the tyre goes bang.

In my experience (again mainly with 16" tyres on survey work), kevlar beaded tyres are much less likely to fail at the bead than wire beaded tyres. Failure higher up on the sidewall has generally been caused by abrasion or impacts on rocks/pothole edges. In the three 26" x 2" models I know about I would rate Marathon Mondial best for this, Dureme second and Supreme last.

For rolling resistance I rate these 3 tyres the other way round, with Supreme first and Marathon Mondial last, with not very much difference between Supreme and Dureme. This is relative, IMO Marathon Mondial still rolls significantly better than a (modern) 26" x 2" Marathon Plus, which I also have some experience of.

Based on the photos of Julio's tyre, I would fit new ones if planning a tour of several thousand kilometres. Supremes if mainly on tarmac, Marathon Mondial (because Duremes seem to be unavailable) if doing a significant amount of riding on rocky tracks. But I'd be quite happy using Julio's old tyres for utility riding or shorter tours.

I generally discard tyres when:
- the tread is worn bare,
- I start getting lots of punctures due to the tread having too many small cracks and holes or just being worn too thin
- the tread has a large cut or (more frequent) the sidewall is damaged (cut or ruptured or abraded).

When I wear out a rear tyre I generally fit the new tyre on the front and put the partly worn front tyre on the back wheel to finish it, as I reckon a rear blowout would be less risky than on the front. After 12000 kms I haven't yet reached that stage with my oldest Supremes.